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我无法在Python客户端中使用下载报告功能。我使用adwords-15.9.0和v201306。它总是失败：“TypeError：无法连接Python中的'str'和'NoneType'对象Google Adwords API客户端
$ ./classifications.py
Traceback (most recent call last):
File "./classifications.py", line 48, in <module>
download_report(client, client_id)
File "./classifications.py", line 32, in download_report
file_path = report_downloader.DownloadReportWithAwql(report_query, 'CSV', file_path=path)
File "/Users/mike/.virtualenvs/xxx/lib/python2.7/site-packages/adspygoogle/adwords/ReportDownloader.py", line 127, in DownloadReportWithAwql
fileobj) or file_path
File "/Users/mike/.virtualenvs/xxx/lib/python2.7/site-packages/adspygoogle/adwords/ReportDownloader.py", line 169, in __DownloadAdHocReportWithAwql
return self.__DownloadReport(payload, return_micros, fileobj)
File "/Users/mike/.virtualenvs/xxx/lib/python2.7/site-packages/adspygoogle/adwords/ReportDownloader.py", line 184, in __DownloadReport
headers = self.__GenerateHeaders(return_micros)
File "/Users/mike/.virtualenvs/xxx/lib/python2.7/site-packages/adspygoogle/adwords/ReportDownloader.py", line 282, in __GenerateHeaders
self._headers['oauth2credentials'].apply(headers)
File "/Users/mike/.virtualenvs/xxx/lib/python2.7/site-packages/oauth2client/client.py", line 533, in apply
headers['Authorization'] = 'Bearer ' + self.access_token
TypeError: cannot concatenate 'str' and 'NoneType' objects
示例脚本get_report_fields.py和get_campaign_stats.py做工精细，但download_criteria_report.py和download_criteria_report_with_awql.py失败，同样的错误。
任何想法？
我的代码：由OAuth2Credentials对象的属性access_token为None所示
#!/usr/bin/env python
import csv
import os
import MySQLdb as mdb
from adspygoogle.adwords.AdWordsClient import AdWordsClient
MATCH_TYPES = {
'b': 'Broad',
'e': 'Exact',
'p': 'Phrase',
}
DEVICE_TYPES = {
'c': 'Desktop',
'm': 'Mobile',
't': 'Tablet',
}
REPORT_TYPE = 'CREATIVE_CONVERSION_REPORT'
def download_report(client, client_id):
# Initialize appropriate service.
report_downloader = client.GetReportDownloader(version='v201306')
# Create report query.
report_query = ('SELECT AdGroupId', 'CampaignId', 'CreativeId FROM CREATIVE_CONVERSION_REPORT DURING LAST_7_DAYS')
path = '/tmp/report_%d.csv' % client_id
file_path = report_downloader.DownloadReportWithAwql(report_query, 'CSV', file_path=path)
print 'Report was downloaded to \'%s\'.' % file_path
if __name__ == '__main__':
client = AdWordsClient()
conn = mdb.connect('xxx.us-east-1.rds.amazonaws.com', 'xxx', 'xxx', 'xxx');
with conn:
cur = conn.cursor(mdb.cursors.DictCursor)
cur.execute("SELECT * FROM xxx.adwords_accounts")
rows = cur.fetchall()
for row in rows:
client_id = row['id']
client.SetClientCustomerId(client_id)
download_report(client, client_id)